News by Topics - Monitoring

An EPA scientist collects a water sample aboard the R/V Lake Guardian in Lake Michigan during the 2022 EPA Summer Survey of Great Lakes water quality and biology.

EPA’s 2023 Summer Survey of Great Lakes Water Quality and Biology Underway

The 2023 Summer Survey marks 40 years of long-term water quality and biological monitoring across the Great Lakes.

August 25, 2023

Foundations for Future Restoration Actions

Lake Guardian

Monitoring

Microscope image of Cyclops divergens. The speciiment is bright pink due to a staining process used in microscopy.

Taxonomic study of rare non-native zooplankton species Cyclops strenuus results in reclassification of earlier identifications of this species in the Great Lakes

EPA GLNPO Great Lakes Biology Monitoring Program cooperators at Cornell University reexamined zooplankton specimens identified as Cyclops strenuus from the St Marys River and from western Lake Erie. Their study reclassifies C. strenuus as two different non-native zooplankton species and resolves a long-standing debate regarding the identity of these rare Cyclops specimens in the Great Lakes.

August 4, 2022